There's an interdependence between flowers and bees. Where there are no flowers there are no bees, and where there are no bees, there are no flowers. They are really one organism. And so in the same way, everything in nature depends on everything else.
To see nothing is to perceive the Way, and to understand nothing is to know the Dharma, because seeing is neither seeing nor not seeing, and because understanding is neither understanding nor not understanding.
It is very pleasant to scratch an itching ring-worm, but the sensation one gets afterwards is very painful and intolerable. In the same way the pleasures of this world are very attractive in the beginning, but their consequences are terrible to contemplate and hard to endure.